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No IP address via AP

cisco.plus
Level 1
Level 1

Hello Experts

We got a small setup with 6 standalone AP model 1142. DHCP server is Windows 2003, all were working fine but lately we noticed that AP cannot provide IP address to users, this happens to all AP now.  on checking we didnt find any issue with DHCP Server and configuration on AP nothing was changed.  if I connect the users via network cable it gets the ip address.  Any assistance in identifying the issue

cheers

CP

7 Replies 7

Leo Laohoo
Hall of Fame
Hall of Fame
lately we noticed that AP cannot provide IP address to users

What is the DHCP lease time?

DHCP lease time is 7 days but when we connect new machines over wired it works.

If you connect a device to the same subnet as the wireless users, you get an ip address correct?  Are the wired and wireless using the same subnet?  Your not using a superscope in your dhcp are you?

Thanks,

Scott

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-Scott
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Hi Scott

here is the reply

If you connect a device to the same subnet as the wireless users, you get an ip address correct?  =  YES

The wired and wireless using the same subnet?  = YES

Your not using a superscope in your dhcp are you?  =  not clear

DHCP on Active Directory

scope 10.10.1.0

mask 255.255.255.0

Default Gateway - 10.10.1.100

Exclude range -  10.10.1.1  to 10.10.1.125

on the wireless Acess point we configured only

  • ip address / mask / gateway
  • hostname
  • WPA 2 key

Can you post your show run-config,

Thanks,

Scott

Help out other by using the rating system and marking answered questions as "Answered"

-Scott
*** Please rate helpful posts ***

Abhishek Abhishek
Cisco Employee
Cisco Employee

Hello Cisco,

As per your query i can suggest you the following steps-

Assigning an IP Address Using the CLI

When you connect the wireless device to the wired LAN, the wireless device links to the network using a bridge virtual interface (BVI) that it creates automatically. Instead of tracking separate IP addresses for the wireless device's Ethernet and radio ports, the network uses the BVI.

When you assign an IP address to the wireless device using the CLI, you must assign the address to the BVI. Beginning in privileged EXEC mode, follow these steps to assign an IP address to the wireless device's BVI:

Step 1  configure terminal

Enter global configuration mode.

Step 2  interface bvi1

Enter interface configuration mode for the BVI.

Step 3 ip address address mask

Assign an IP address and address mask to the BVI.

Note If you are connected to the wireless device using a Telnet session, you lose your connection to the wireless device when you assign a new IP address to the BVI. If you need to continue configuring the wireless device using Telnet, use the new IP address to open another Telnet session to the wireless device.

Hope this will help you.

sanjaygowda821
Level 1
Level 1

hi Team,

 

we have configured AIR-AP2802I-D-K9 and added same access points in WLC .

configured SSID, interface and DHCP group, but ip not releasing.

Note: WLC controller available at different locations and access points available at different locations, we can view access points in WLC, but iP does not release.

what could be the issue  

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